Fix crash and other errors with Results snapshots
When deleteAll() is called on a Realm, it calls clear() on all of its Tables, which seems to not update TableViews unless they are synced. The is_row_attached(row_ndx) method still returns true otherwise. A workaround is here until that is fixed. Fixes #434
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@ -96,7 +96,7 @@ bool Results::is_valid() const
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m_realm->verify_thread();
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m_realm->verify_thread();
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if (m_table && !m_table->is_attached())
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if (m_table && !m_table->is_attached())
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return false;
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return false;
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if (m_mode == Mode::TableView && (!m_table_view.is_attached() || m_table_view.depends_on_deleted_object()))
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if (m_mode == Mode::TableView && (!m_table_view.is_attached() || (m_live && m_table_view.depends_on_deleted_object())))
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return false;
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return false;
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if (m_mode == Mode::LinkView && !m_link_view->is_attached())
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if (m_mode == Mode::LinkView && !m_link_view->is_attached())
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return false;
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return false;
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@ -121,8 +121,8 @@ void Results::set_live(bool live)
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{
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{
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validate_read();
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validate_read();
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if (!live && m_mode == Mode::Table) {
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if (!live && (m_mode == Mode::Table || m_mode == Mode::LinkView)) {
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m_query = m_table->where();
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m_query = get_query();
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m_mode = Mode::Query;
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m_mode = Mode::Query;
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}
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}
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@ -173,7 +173,8 @@ RowExpr Results::get(size_t row_ndx)
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update_tableview();
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update_tableview();
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if (row_ndx >= m_table_view.size())
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if (row_ndx >= m_table_view.size())
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break;
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break;
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if (!m_live && !m_table_view.is_row_attached(row_ndx))
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// If clear() was called on the underlying Table, then is_row_attached(row_ndx) will still return true.
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if (!m_live && (m_table_view.get_parent().is_empty() || !m_table_view.is_row_attached(row_ndx)))
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return {};
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return {};
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return m_table_view.get(row_ndx);
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return m_table_view.get(row_ndx);
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}
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}
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@ -392,7 +393,15 @@ void Results::clear()
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case Mode::TableView:
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case Mode::TableView:
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validate_write();
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validate_write();
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update_tableview();
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update_tableview();
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m_table_view.clear(RemoveMode::unordered);
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if (m_live) {
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m_table_view.clear(RemoveMode::unordered);
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}
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else {
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// Copy the TableView because a non-live Results shouldn't have let its size() change.
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TableView table_view_copy = m_table_view;
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table_view_copy.clear(RemoveMode::unordered);
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}
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break;
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break;
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case Mode::LinkView:
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case Mode::LinkView:
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validate_write();
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validate_write();
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